Am Mittwoch, 5. Februar 2020, 19:19:46 CET schrieb Andrei Borzenkov:

05.02.2020 16:11, Peter Suetterlin пишет:

...

Hi list,

as in the topoic - I try to figure out where the rules are set by which systemd-logind grants access to devices like sound and video.

The issue is that after some update, /dev/nvidia* is no longer treated by it, so stays unaccessible to users other than root:video It does work for /dev/snd/* and /dev/dri/card*, just not for /dev/nvidia*

Any hints?

udev rules add tag uaccess and later udev runs uaccess builtin if device has this tag.

ENV{ID_MAKER_TOOL}=="?*", TAG+="uaccess"

and later

TAG=="uaccess", ENV{MAJOR}!="", RUN{builtin}+="uaccess"''

Probably tag is not added to nVidia nodes.

Since nvidia drivers not even touch anything udev, this it the missing part. The device nodes are set up in /etc/modprobe.d/50-nvidia-default.conf: options nvidia NVreg_DeviceFileUID=0 NVreg_DeviceFileGID=484 NVreg_DeviceFileMode=0660 install nvidia PATH=$PATH:/bin:/usr/bin; if /sbin/modprobe --ignore-install nvidia; then if /sbin/modprobe nvidia_uvm; then if [ ! -c /dev/nvidia-uvm ]; then mknod -m 660 /dev/nvidia-uvm c $(cat /proc/devices | while read major device; do if [ "$device" == "nvidia-uvm" ]; then echo $major; break; fi ; done) 0; chown :video /dev/nvidia-uvm; fi; fi; if [ ! -c /dev/nvidiactl ]; then mknod -m 660 /dev/nvidiactl c 195 255; chown :video /dev/nvidiactl; fi; devid=-1; for dev in $(ls -d /sys/bus/pci/devices/*); do vendorid=$(cat $dev/vendor); if [ "$vendorid" == "0x10de" ]; then class=$(cat $dev/class); classid=${class%%00}; if [ "$classid" == "0x0300" -o "$classid" == "0x0302" ]; then devid=$((devid+1)); if [ ! -c /dev/nvidia${devid} ]; then mknod -m 660 /dev/nvidia${devid} c 195 ${devid}; chown :video /dev/nvidia${devid}; fi; fi; fi; done; /sbin/modprobe nvidia_drm; if [ ! -c /dev/nvidia-modeset ]; then mknod -m 660 /dev/nvidia-modeset c 195 254; chown :video /dev/nvidia-modeset; fi; fi I wonder, how this could ever work without video membership. Cheers, Pete -- To unsubscribe, e-mail: opensuse-support+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse-support+owner@opensuse.org